Keep your home warmer in the summer and cooler in the winter. Put on more clothing in the winter to stay warmer.
Open your windows and use fans instead of the air conditioner as much as possible.
Wait to use appliances, like the oven, that generate heat until later at night during the summer. That way the house won’t get as hot and your air conditioning won’t run as much.
Stop or decrease using your dryer. Use a line or if you don’t have a line use a drying rack or get creative.
Use cold water for washing your clothes.
Unplug things that are not in use like your TV, phone charger, coffee maker, etc
Use CFL light bulbs. Not only do they last a lot longer than can save $35 in its lifetime.
Clean or change out your air filter once a month so your furnace doesn’t have to work harder then it needs to. Even better you can purchase reusable air filters so you will never have to waste money on filters again.
Use energy star appliances. When we purchase a house I know we will upgrade the appliances slowly but surely.
When using your dishwasher don’t use the heat dry cycle let it air dry and use the shortest washing setting.
Watch less TV and use the computer less. (I need to get better at this one)
Cook multiple dishes at once so the oven doesn’t have to waste energy using it at multiple times. Use a crock pot or smaller appliance rather than the oven.
Shop around for your electricity and see which company offers the cheapest per Kw
Make sure there are no drafts coming from windows or doors. Apply weather stripping or caulk.
Once a week have a night where you don’t use electricity. Use candle light or battery powered light and play board games.
On the more extreme end…..
Paint your roof white. The darker the roof the more energy it absorbs and the more it will cost to cool it.
Install solar panels for the majority of your house’s electrical needs.